diff --git a/src/AcDream.App/Rendering/GameWindow.cs b/src/AcDream.App/Rendering/GameWindow.cs
index 45ab2c9..b54eb60 100644
--- a/src/AcDream.App/Rendering/GameWindow.cs
+++ b/src/AcDream.App/Rendering/GameWindow.cs
@@ -9170,19 +9170,26 @@ public sealed class GameWindow : IDisposable
 
     /// <summary>
     /// B.6+B.7 (2026-05-15). Fires when <see cref="PlayerMovementController.AutoWalkArrived"/>
-    /// signals natural arrival at an auto-walk target. Re-sends the
-    /// Use/PickUp action that started the walk so ACE completes it via
-    /// the WithinUseRadius shortcut even if its server-side MoveToChain
-    /// already gave up.
+    /// signals natural arrival at an auto-walk target. Force-flushes
+    /// the player's current authoritative position to ACE first, then
+    /// re-sends the Use/PickUp. Without the position flush, ACE
+    /// processes the re-sent Use before the next per-frame
+    /// AutonomousPosition heartbeat — so ACE's Player.Location is
+    /// still stale (back where the auto-walk started) and ACE replies
+    /// with another MoveToObject instead of completing the action.
     /// </summary>
     private void OnAutoWalkArrivedReSendAction()
     {
         if (_pendingPostArrivalAction is not (uint guid, bool isPickup) pending)
             return;
-        // Clear FIRST to break any retry loop — if ACE somehow re-sends
-        // MoveToObject for the close-range action, we don't want
-        // arrival to fire a third action.
+        // Clear FIRST to break any retry loop.
         _pendingPostArrivalAction = null;
+
+        // Send a fresh AutonomousPosition NOW so ACE's server-side
+        // Player.Location updates to our arrived position before ACE
+        // sees the re-sent action.
+        SendAutonomousPositionNow();
+
         if (AcDream.Core.Physics.PhysicsDiagnostics.ProbeAutoWalkEnabled)
             Console.WriteLine(System.FormattableString.Invariant(
                 $"[autowalk-arrived-resend] guid=0x{guid:X8} isPickup={isPickup}"));
@@ -9190,6 +9197,48 @@ public sealed class GameWindow : IDisposable
         else          SendUse(guid, isRetryAfterArrival: true);
     }
 
+    /// <summary>
+    /// B.6+B.7 (2026-05-15). Send an out-of-frame AutonomousPosition
+    /// packet using the controller's current authoritative state.
+    /// Used to flush position to ACE on auto-walk arrival before
+    /// re-sending the Use/PickUp action; without it, ACE's
+    /// Player.Location is the pre-walk position and the action
+    /// resolves out-of-range.
+    /// </summary>
+    private void SendAutonomousPositionNow()
+    {
+        if (_liveSession is null
+            || _liveSession.CurrentState != AcDream.Core.Net.WorldSession.State.InWorld
+            || _playerController is null)
+            return;
+
+        var pos = _playerController.Position;
+        int lbX = _liveCenterX + (int)MathF.Floor(pos.X / 192f);
+        int lbY = _liveCenterY + (int)MathF.Floor(pos.Y / 192f);
+        float localX = pos.X - (lbX - _liveCenterX) * 192f;
+        float localY = pos.Y - (lbY - _liveCenterY) * 192f;
+        uint wireCellId = ((uint)lbX << 24) | ((uint)lbY << 16) | (_playerController.CellId & 0xFFFFu);
+        var wirePos = new System.Numerics.Vector3(localX, localY, pos.Z);
+        var wireRot = YawToAcQuaternion(_playerController.Yaw);
+        byte contactByte = _playerController.IsAirborne ? (byte)0 : (byte)1;
+
+        var seq = _liveSession.NextGameActionSequence();
+        var body = AcDream.Core.Net.Messages.AutonomousPosition.Build(
+            gameActionSequence:    seq,
+            cellId:                wireCellId,
+            position:              wirePos,
+            rotation:              wireRot,
+            instanceSequence:      _liveSession.InstanceSequence,
+            serverControlSequence: _liveSession.ServerControlSequence,
+            teleportSequence:      _liveSession.TeleportSequence,
+            forcePositionSequence: _liveSession.ForcePositionSequence,
+            lastContact:           contactByte);
+        _liveSession.SendGameAction(body);
+        if (AcDream.Core.Physics.PhysicsDiagnostics.ProbeAutoWalkEnabled)
+            Console.WriteLine(System.FormattableString.Invariant(
+                $"[autowalk-flush-ap] seq={seq} cell=0x{wireCellId:X8} pos=({wirePos.X:F2},{wirePos.Y:F2},{wirePos.Z:F2})"));
+    }
+
     private uint? SelectClosestCombatTarget(bool showToast)
     {
         if (!_entitiesByServerGuid.TryGetValue(_playerServerGuid, out var playerEntity))